what is your definition of a "black hole"?

Question

does it involve singularity?

Answer 1

Any mass dense enough to have an escape velocity greater than the speed of light. It does not necessarily have to be a singularity, although it is generally assumed that such a dense object would inevitably collapse to a singularity.

Answer 2

An object with such intense gravity that nothing, not even light, can escape it.

Singularity? Science doesn't know because when attempts are made to solve equations for black holes the solutions are nonsense, like for a singularity -- infinite mass contained within zero volume.

Answer 3

A distortion in the fabric of space time which occurs when the density of matter becomes too great and a self-accelerating process warps four-dimensional space time to a point singularity. The singularity is surrounded by an event horizon-a spherical boundary that imprisons all mass and radiation that crosses it. It is called black because it does not allow radiation (light) to escape.

Answer 4

A black hole is an object predicted by general relativity[1] with a gravitational field so strong that nothing can escape it — not even light.

A black hole is defined to be a region of space-time where escape to the outside universe is impossible. The boundary of this region is a surface called the event horizon. This surface is not a physically tangible one, but merely a figurative concept of an imaginary boundary. Nothing can move from inside the event horizon to the outside, even briefly.

The existence of black holes in the universe is well supported by astronomical observation, particularly from studying X-ray emission from X-ray binaries and active galactic nuclei. It has also been hypothesized that black holes radiate energy due to quantum mechanical effects known as Hawking radiation.
Black Hole
A point of extreme mass in spacetime with a radius, or event horizon, inside of which all electromagnetic radiation (including light) is trapped by gravity - No communication is possible from inside the event horizon to the world outside



Astron.a theoretical massive object, formed at the beginning of the universe or by the gravitational collapse of a star exploding as a supernova, whose gravitational field is so intense that no electromagnetic radiation can escape.

Black' Hole'


1. Also called Black' Hole' of Cal•cut'ta. a small prison cell in Fort William, Calcutta, in which, in 1756, Indians are said to have imprisoned 146 Europeans, only 23 of whom were alive the following morning.
2. (l.c.) any usually wretched place of imprisonment or confinement.

Answer 5

Yes...

At the center of a black hole, there is that point referred to as a singularity...

The website below gives a pretty good description that is easy to follow...

Answer 6

all i know about black holes that they exist often. what they do is that they suck everything even the stars or the galaxies.when it happens to earth ; our body would change it will go longer because the black hole is sucking almost everything. imagine an one inch tree then when the black hole exist carefully the tree stretch longer than than 5 inches!!! then step by step body parts goes off to your body like your feet then legs then everything else on your body. then what happens to earths is that its going to stretch until the black hole sucks everything. I'm really not sure if what happens to us after we get sucked by a black hole. we might go to another dimension or another lifetime. or we might be ded bodies floating around there somewhere!!!

Answer 7

hm . i would say when a powerful star dies . it turns into a black hole .
the black hole forms and sucks everything into it . its power is so great nothing escapes, not even light .. ohhhh that black hole . nvm not sure

Answer 8

a black hole is a a thing in space that lets nothing in and nothing out. not even light. it's like a big nothing i guess is the best way to describe it.

Answer 9

Hi. What you get when an object reaches maximum density. The space just kind of folds around itself.

Answer 10

To me, it means wasted space or intelligence...like a student who has potential, but comes to class and sleeps...wasting a desk, time, money, and air.